Portion of a display panel with a graphical user interface



FIG. 1 is a front view of a portion of a display panel with a graphical user interface showing a first embodiment of my new design; and,

FIG. 2 is a front view of a portion of a display panel with a graphical user interface showing a second embodiment of my new design.

The broken lines including the showing of a portion of a display panel of a communications terminal surrounding the illustrated user interface and portions of the graphical user interface are included for the purpose of illustrating environment and form no part of the claimed design. The stippling is used to show relative degrees of shading throughout this interface. 

CLAIM The ornamental design for the portion of a display panel with a graphical user interface, as shown and described. 